Although it's part art book and part text features: Every Day is Play (https://www.kickstarter.com/projects/gamepaused/everyday-is-play-a-celebration-of-the-vid

Although it's part art book and part text features: Every Day is Play (https://www.kickstarter.com/projects/gamepaused/everyday-is-play-a-celebration-of-the-video-game https://www.kickstarter.com/projects/gamepaused/everyday-is-...), but because it has been funded through Kickstarter and published only once at the time it could be a rare find (although a quick Google search showed me that some copies are being sold through the likes of Ebay)